C#通過FileSystemWatcher監(jiān)控文件添加或者刪除事件，當(dāng)監(jiān)控的目錄里的文件增加或者刪除時會觸發(fā)指定的事件

using System;
using System.IO;
using System.Windows.Forms;
  
class MainClass {
    static void Main(string[] args) {
        using (FileSystemWatcher watch = new FileSystemWatcher()) {
            watch.Path = Application.StartupPath;
            watch.Filter = "*.*";
            watch.IncludeSubdirectories = true;
  
            // Attach the event handler.
            watch.Created += new FileSystemEventHandler(OnCreatedOrDeleted);
            watch.Deleted += new FileSystemEventHandler(OnCreatedOrDeleted);
            watch.EnableRaisingEvents = true;
  
            Console.WriteLine("Press Enter to create a  file.");
            Console.ReadLine();
  
            if (File.Exists("test.bin")) {
                File.Delete("test.bin");
            }
  
            // Create test.bin.
            using (FileStream fs = new FileStream("test.bin", FileMode.Create)) {
                // Do something.
            }
  
            Console.WriteLine("Press Enter to terminate the application.");
            Console.ReadLine();
        }
    }
  
    private static void OnCreatedOrDeleted(object sender, FileSystemEventArgs e) {
        Console.WriteLine("\tNOTIFICATION: " + e.FullPath + "' was " + e.ChangeType.ToString());
        Console.WriteLine();
    }
}

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